Based on our record, GNUstep should be more popular than Window Maker. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I agree with your other comment that a single UI that looks 100% "native" everywhere is a pipe dream. I don't know why certain people keep chasing that rainbow. As someone else noted, "native" isn't even really defined on Linux. For example, I use Window Maker, which has a very different UI than GNOME and KDE—it's not based on GNUstep but has a similar look and integrates well with it. On Linux there are people... Source: almost 2 years ago
GNUstep: Open-source, Object-oriented, Cross-platform Development Environment\ (71 comments). Source: over 2 years ago
Look at windowmaker.org Very configurable, tiles if you want, lots of little gadgets work with it. Always been one of my favorites! Source: almost 3 years ago
LXDE - Why will you like it? Less resource needs. You can use it on your less-pricey embedded board or salvaged computer. Component-based design. Don't want something in LXDE, or you don't want to use LXDE but only part of it?
Fluxbox - Fluxbox is a window manager for X that was based on the Blackbox 0.61.1 code.
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
IceWM - icewm home page . Bug Tracking. If you have a patch, a bug report or a feature request to submit, please do so at the icewm project page at SourceForge.
Xfce - Xfce is a lightweight desktop environment for UNIX-like operating systems. It aims to be fast and low on system resources, while still being visually appealing and user friendly.
Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.